Yoga is an ancient tradition of mental and physical exercises, which started in India over 5,000 years ago and is now widely practised in the UK. There are many different styles of yoga. Some are physically more demanding, some are gentler, some focus more on physical postures, while others focus more on breathing and meditation. Yoga therapy involves the use of yoga to deal with and prevent illness and to maintain good health. It includes physical exercises, breathing techniques and relaxation. Yoga aims to strengthen the body and calm the mind.